int Ctgdb::Process_console_command(tgdb_request_ptr request)
{
struct ibuf *command;
if (!request)
return -1;
if (!Can_issue_command())
return -1;
if (request->header != TGDB_REQUEST_CONSOLE_COMMAND)
return -1;
command = ibuf_init ();
ibuf_add (command, request->choice.console_command.command);
ibuf_addchar (command, '\n');
if (Send(ibuf_get (command), TGDB_COMMAND_CONSOLE) == -1)
{
Logger_write_pos( __FILE__, __LINE__, "tgdb_send failed");
return -1;
}
ibuf_free (command);
command = NULL;
return 0;
}
struct ibuf *ibuf_dup(struct ibuf *s)
{
struct ibuf *ns = ibuf_init();
ibuf_add(ns, ibuf_get(s));
return ns;
}
static int test_add(ibuf s) {
/* Add the strings "hello" and " world" to the ibuf */
ibuf_add(s, "hello");
ibuf_add(s, " world");
/* Make sure that's what got added */
if (strcmp(ibuf_get(s), "hello world") != 0) {
debug("test_add: Mismatch, expected \"hello world\", got: %s\n",
ibuf_get(s));
return 1;
}
debug("test_add: Succeeded.\n");
return 0;
}
struct iked_message *
ikev2_msg_copy(struct iked *env, struct iked_message *msg)
{
struct iked_message *m = NULL;
struct ibuf *buf;
size_t len;
void *ptr;
if (ibuf_size(msg->msg_data) < msg->msg_offset)
return (NULL);
len = ibuf_size(msg->msg_data) - msg->msg_offset;
if ((ptr = ibuf_seek(msg->msg_data, msg->msg_offset, len)) == NULL ||
(m = malloc(sizeof(*m))) == NULL ||
(buf = ikev2_msg_init(env, m, &msg->msg_peer, msg->msg_peerlen,
&msg->msg_local, msg->msg_locallen, msg->msg_response)) == NULL ||
ibuf_add(buf, ptr, len))
return (NULL);
m->msg_fd = msg->msg_fd;
m->msg_msgid = msg->msg_msgid;
m->msg_offset = msg->msg_offset;
m->msg_sa = msg->msg_sa;
return (m);
}
int
imsg_add(struct ibuf *msg, const void *data, u_int16_t datalen)
{
if (datalen)
if (ibuf_add(msg, data, datalen) == -1) {
ibuf_free(msg);
return (-1);
}
return (datalen);
}
int
eap_challenge_request(struct iked *env, struct iked_sa *sa,
struct eap_header *hdr)
{
struct eap_message *eap;
struct eap_mschap_challenge *ms;
const char *name;
int ret = -1;
struct ibuf *e;
if ((e = ibuf_static()) == NULL)
return (-1);
if ((eap = ibuf_advance(e, sizeof(*eap))) == NULL)
goto done;
eap->eap_code = EAP_CODE_REQUEST;
eap->eap_id = hdr->eap_id + 1;
eap->eap_type = sa->sa_policy->pol_auth.auth_eap;
switch (sa->sa_policy->pol_auth.auth_eap) {
case EAP_TYPE_MSCHAP_V2:
name = IKED_USER; /* XXX should be user-configurable */
eap->eap_length = htobe16(sizeof(*eap) +
sizeof(*ms) + strlen(name));
if ((ms = ibuf_advance(e, sizeof(*ms))) == NULL)
return (-1);
ms->msc_opcode = EAP_MSOPCODE_CHALLENGE;
ms->msc_id = eap->eap_id;
ms->msc_length = htobe16(sizeof(*ms) + strlen(name));
ms->msc_valuesize = sizeof(ms->msc_challenge);
arc4random_buf(ms->msc_challenge, sizeof(ms->msc_challenge));
if (ibuf_add(e, name, strlen(name)) == -1)
goto done;
/* Store the EAP challenge value */
sa->sa_eap.id_type = eap->eap_type;
if ((sa->sa_eap.id_buf = ibuf_new(ms->msc_challenge,
sizeof(ms->msc_challenge))) == NULL)
goto done;
break;
default:
log_debug("%s: unsupported EAP type %s", __func__,
print_map(eap->eap_type, eap_type_map));
goto done;
}
ret = ikev2_send_ike_e(env, sa, e,
IKEV2_PAYLOAD_EAP, IKEV2_EXCHANGE_IKE_AUTH, 1);
done:
ibuf_release(e);
return (ret);
}
static int test_trim(ibuf s) {
/* Test #1: Empty string. */
ibuf_clear(s);
ibuf_trim(s);
if (strcmp(ibuf_get(s), "") != 0) {
debug("test_trim: 1: expected empty string, got: %s\n", ibuf_get(s));
return 1;
}
/* Test #2: Single space. */
ibuf_clear(s);
ibuf_addchar(s, ' ');
ibuf_trim(s);
if (strcmp(ibuf_get(s), "") != 0) {
debug("test_trim: 2: expected empty string, got: %s\n", ibuf_get(s));
return 2;
}
/* Test #3: "hello world" (no leading or trailing spaces) */
ibuf_clear(s);
ibuf_add(s, "hello world");
ibuf_trim(s);
if (strcmp(ibuf_get(s), "hello world") != 0) {
debug("test_trim: 3: expected \"hello world\", got: %s\n",
ibuf_get(s));
return 3;
}
/* Test #4: " hello world \t" (leading and trailing spaces) */
ibuf_clear(s);
ibuf_add(s, " hello world \t");
ibuf_trim(s);
if (strcmp(ibuf_get(s), "hello world") != 0) {
debug("test_trim: 4: expected \"hello world\", got: %s\n",
ibuf_get(s));
return 3;
}
debug("test_trim: Succeeded.\n");
return 0;
}
void
tcp_read_buf(int s, short event, void *arg)
{
ssize_t br;
char rbuf[SMALL_READ_BUF_SIZE];
struct ctl_tcp_event *cte = arg;
if (event == EV_TIMEOUT) {
cte->host->up = HOST_DOWN;
ibuf_free(cte->buf);
close(s);
hce_notify_done(cte->host, HCE_TCP_READ_TIMEOUT);
return;
}
bzero(rbuf, sizeof(rbuf));
br = read(s, rbuf, sizeof(rbuf) - 1);
switch (br) {
case -1:
if (errno == EAGAIN || errno == EINTR)
goto retry;
cte->host->up = HOST_DOWN;
ibuf_free(cte->buf);
close(cte->s);
hce_notify_done(cte->host, HCE_TCP_READ_FAIL);
return;
case 0:
cte->host->up = HOST_DOWN;
(void)cte->validate_close(cte);
close(cte->s);
ibuf_free(cte->buf);
hce_notify_done(cte->host, cte->host->he);
return;
default:
if (ibuf_add(cte->buf, rbuf, br) == -1)
fatal("tcp_read_buf: buf_add error");
if (cte->validate_read != NULL) {
if (cte->validate_read(cte) != 0)
goto retry;
close(cte->s);
ibuf_free(cte->buf);
hce_notify_done(cte->host, cte->host->he);
return;
}
break; /* retry */
}
retry:
event_again(&cte->ev, s, EV_TIMEOUT|EV_READ, tcp_read_buf,
&cte->tv_start, &cte->table->conf.timeout, cte);
}
void
gen_address_list_tlv(struct ibuf *buf, struct iface *iface, u_int16_t size)
{
struct address_list_tlv alt;
struct iface *niface;
/* We want just the size of the value */
size -= TLV_HDR_LEN;
bzero(&alt, sizeof(alt));
alt.type = TLV_TYPE_ADDRLIST;
alt.length = htons(size);
/* XXX: just ipv4 for now */
alt.family = htons(ADDR_IPV4);
ibuf_add(buf, &alt, sizeof(alt));
if (iface == NULL)
LIST_FOREACH(niface, &leconf->iface_list, entry)
ibuf_add(buf, &niface->addr, sizeof(niface->addr));
else
ibuf_add(buf, &iface->addr, sizeof(iface->addr));
}
int highlight_node(const char *filename, struct buffer *buf)
{
int ret;
int length = 0;
int lasttype = -1;
struct ibuf *ibuf = ibuf_init();
struct tokenizer *t = tokenizer_init();
if (tokenizer_set_file(t, filename, buf->language) == -1) {
if_print_message("%s:%d tokenizer_set_file error", __FILE__, __LINE__);
return -1;
}
while ((ret = tokenizer_get_token(t)) > 0) {
enum tokenizer_type e = tokenizer_get_packet_type(t);
/*if_print_message ( "TOKEN(%d:%s)\n", e, tokenizer_get_printable_enum ( e ) ); */
if (e == TOKENIZER_NEWLINE) {
sbpush(buf->tlines, strdup(ibuf_get(ibuf)));
if (length > buf->max_width)
buf->max_width = length;
length = 0;
lasttype = -1;
ibuf_clear(ibuf);
} else {
const char *tok_data = tokenizer_get_data(t);
enum hl_group_kind hlg = hlg_from_tokenizer_type(e, tok_data);
if (hlg == HLG_LAST) {
logger_write_pos(logger, __FILE__, __LINE__, "Bad hlg_type for '%s', e==%d\n", tok_data, e);
hlg = HLG_TEXT;
}
/* Set the highlight group type */
add_type(ibuf, &lasttype, hlg);
/* Add the text and bump our length */
length += ibuf_add(ibuf, tok_data);
}
}
ibuf_free(ibuf);
tokenizer_destroy(t);
return 0;
}
int
gen_hello_prms_tlv(struct iface *iface, struct ibuf *buf, u_int16_t size)
{
struct hello_prms_tlv parms;
/* We want just the size of the value */
size -= TLV_HDR_LEN;
bzero(&parms, sizeof(parms));
parms.type = htons(TLV_TYPE_COMMONHELLO);
parms.length = htons(size);
/* XXX */
parms.holdtime = htons(iface->holdtime);
parms.flags = 0;
return (ibuf_add(buf, &parms, sizeof(parms)));
}
int
gen_status_tlv(struct ibuf *buf, u_int32_t status, u_int32_t msgid,
u_int32_t type)
{
struct status_tlv st;
bzero(&st, sizeof(st));
st.type = htons(TLV_TYPE_STATUS);
st.length = htons(STATUS_TLV_LEN);
st.status_code = htonl(status);
st.msg_id = msgid;
st.msg_type = type;
return (ibuf_add(buf, &st, STATUS_SIZE));
}
int
gen_status_tlv(struct ibuf *buf, uint32_t status_code, uint32_t msg_id,
uint16_t msg_type)
{
struct status_tlv st;
memset(&st, 0, sizeof(st));
st.type = htons(TLV_TYPE_STATUS);
st.length = htons(STATUS_TLV_LEN);
st.status_code = htonl(status_code);
/*
* For convenience, msg_id and msg_type are already in network
* byte order.
*/
st.msg_id = msg_id;
st.msg_type = msg_type;
return (ibuf_add(buf, &st, STATUS_SIZE));
}
int
gen_init_prms_tlv(struct ibuf *buf, struct nbr *nbr, u_int16_t size)
{
struct sess_prms_tlv parms;
/* We want just the size of the value */
size -= TLV_HDR_LEN;
bzero(&parms, sizeof(parms));
parms.type = htons(TLV_TYPE_COMMONSESSION);
parms.length = htons(size);
parms.proto_version = htons(LDP_VERSION);
parms.keepalive_time = htons(leconf->keepalive);
parms.reserved = 0;
parms.pvlim = 0;
parms.max_pdu_len = 0;
parms.lsr_id = nbr->id.s_addr;
parms.lspace_id = 0;
return (ibuf_add(buf, &parms, SESS_PRMS_SIZE));
}
static int test_dup(ibuf s)
{
ibuf t;
/* Test duplicating a string. */
ibuf_add(s, "test string 1");
t = ibuf_dup(s);
if (t == NULL) {
debug("test_dup: ibuf_dup (attempt #1) returned NULL\n");
return 1;
}
if (strcmp(ibuf_get(s), ibuf_get(t)) != 0) {
debug("test_dup: Strings mismatched: \"%s\" != \"%s\"\n",
ibuf_get(s), ibuf_get(t));
return 1;
}
ibuf_free(t);
/* Corner case: duplicate an empty string */
ibuf_clear(s);
t = ibuf_dup(s);
if (t == NULL) {
debug("test_dup: ibuf_dup (attempt #2) returned NULL\n");
return 1;
}
if (strcmp(ibuf_get(t), "") != 0) {
debug("test_dup: Expected empty string, got: %s\n", ibuf_get(t));
return 1;
}
ibuf_free(t);
debug("test_dup: Succeeded.\n");
return 0;
}
int Ctgdb::Send(char *command, enum tgdb_command_choice command_choice, ITarget* target)
{
struct tgdb_command *tc;
struct ibuf *temp_command = ibuf_init ();
int length = strlen (command);
/* Add a newline to the end of the command if it doesn't exist */
ibuf_add (temp_command, command);
if (command[length - 1] != '\n')
ibuf_addchar (temp_command, '\n');
/* Create the client command */
tc = tgdb_command_create (ibuf_get (temp_command), command_choice, NULL);
tc->ITarget = (void*) target;
ibuf_free (temp_command);
temp_command = NULL;
if (Run_or_queue_command(tc) == -1)
{
Logger_write_pos( __FILE__, __LINE__,
"tgdb_run_or_queue_command failed");
return -1;
}
if (tgdb_client_tgdb_ran_command(tcc) == -1)
{
Logger_write_pos( __FILE__, __LINE__,
"tgdb_client_tgdb_ran_command failed");
return -1;
}
Process_client_commands();
return 0;
}
/* database description packet handling */
int
send_db_description(struct nbr *nbr)
{
struct in6_addr dst;
struct db_dscrp_hdr dd_hdr;
struct lsa_entry *le, *nle;
struct ibuf *buf;
int ret = 0;
u_int8_t bits = 0;
if ((buf = ibuf_open(nbr->iface->mtu - sizeof(struct ip))) == NULL)
fatal("send_db_description");
/* OSPF header */
if (gen_ospf_hdr(buf, nbr->iface, PACKET_TYPE_DD))
goto fail;
/* reserve space for database description header */
if (ibuf_reserve(buf, sizeof(dd_hdr)) == NULL)
goto fail;
switch (nbr->state) {
case NBR_STA_DOWN:
case NBR_STA_ATTEMPT:
case NBR_STA_INIT:
case NBR_STA_2_WAY:
case NBR_STA_SNAP:
log_debug("send_db_description: cannot send packet in state %s,"
" neighbor ID %s", nbr_state_name(nbr->state),
inet_ntoa(nbr->id));
ret = -1;
goto done;
case NBR_STA_XSTRT:
bits |= OSPF_DBD_MS | OSPF_DBD_M | OSPF_DBD_I;
nbr->dd_more = 1;
break;
case NBR_STA_XCHNG:
if (nbr->dd_master)
bits |= OSPF_DBD_MS;
else
bits &= ~OSPF_DBD_MS;
if (TAILQ_EMPTY(&nbr->db_sum_list)) {
bits &= ~OSPF_DBD_M;
nbr->dd_more = 0;
} else {
bits |= OSPF_DBD_M;
nbr->dd_more = 1;
}
bits &= ~OSPF_DBD_I;
/* build LSA list */
for (le = TAILQ_FIRST(&nbr->db_sum_list); le != NULL &&
buf->wpos + sizeof(struct lsa_hdr) < buf->max; le = nle) {
nbr->dd_end = nle = TAILQ_NEXT(le, entry);
if (ibuf_add(buf, le->le_lsa, sizeof(struct lsa_hdr)))
goto fail;
}
break;
case NBR_STA_LOAD:
case NBR_STA_FULL:
if (nbr->dd_master)
bits |= OSPF_DBD_MS;
else
bits &= ~OSPF_DBD_MS;
bits &= ~OSPF_DBD_M;
bits &= ~OSPF_DBD_I;
nbr->dd_more = 0;
break;
default:
fatalx("send_db_description: unknown neighbor state");
}
bzero(&dd_hdr, sizeof(dd_hdr));
switch (nbr->iface->type) {
case IF_TYPE_POINTOPOINT:
inet_pton(AF_INET6, AllSPFRouters, &dst);
dd_hdr.iface_mtu = htons(nbr->iface->mtu);
break;
case IF_TYPE_BROADCAST:
dst = nbr->addr;
dd_hdr.iface_mtu = htons(nbr->iface->mtu);
break;
case IF_TYPE_NBMA:
case IF_TYPE_POINTOMULTIPOINT:
/* XXX not supported */
break;
case IF_TYPE_VIRTUALLINK:
dst = nbr->iface->dst;
dd_hdr.iface_mtu = 0;
break;
default:
fatalx("send_db_description: unknown interface type");
}
dd_hdr.opts = htonl(area_ospf_options(area_find(oeconf,
nbr->iface->area_id)));
dd_hdr.bits = bits;
dd_hdr.dd_seq_num = htonl(nbr->dd_seq_num);
memcpy(ibuf_seek(buf, sizeof(struct ospf_hdr), sizeof(dd_hdr)),
&dd_hdr, sizeof(dd_hdr));
/* calculate checksum */
if (upd_ospf_hdr(buf, nbr->iface))
goto fail;
/* transmit packet */
ret = send_packet(nbr->iface, buf->buf, buf->wpos, &dst);
done:
ibuf_free(buf);
return (ret);
fail:
log_warn("send_db_description");
ibuf_free(buf);
return (-1);
}
void
ssl_read(int s, short event, void *arg)
{
char rbuf[SMALL_READ_BUF_SIZE];
struct ctl_tcp_event *cte = arg;
int retry_flag = EV_READ;
int tls_err = 0;
int ret;
if (event == EV_TIMEOUT) {
cte->host->up = HOST_DOWN;
ssl_cleanup(cte);
hce_notify_done(cte->host, HCE_TLS_READ_TIMEOUT);
return;
}
bzero(rbuf, sizeof(rbuf));
ret = SSL_read(cte->ssl, rbuf, sizeof(rbuf));
if (ret <= 0) {
tls_err = SSL_get_error(cte->ssl, ret);
switch (tls_err) {
case SSL_ERROR_WANT_READ:
retry_flag = EV_READ;
goto retry;
case SSL_ERROR_WANT_WRITE:
retry_flag = EV_WRITE;
goto retry;
case SSL_ERROR_ZERO_RETURN: /* FALLTHROUGH */
case SSL_ERROR_SYSCALL:
if (ret == 0) {
cte->host->up = HOST_DOWN;
(void)cte->validate_close(cte);
ssl_cleanup(cte);
hce_notify_done(cte->host, cte->host->he);
return;
}
/* FALLTHROUGH */
default:
cte->host->up = HOST_DOWN;
ssl_error(cte->host->conf.name, "cannot read");
ssl_cleanup(cte);
hce_notify_done(cte->host, HCE_TLS_READ_ERROR);
break;
}
return;
}
if (ibuf_add(cte->buf, rbuf, ret) == -1)
fatal("ssl_read: buf_add error");
if (cte->validate_read != NULL) {
if (cte->validate_read(cte) != 0)
goto retry;
ssl_cleanup(cte);
hce_notify_done(cte->host, cte->host->he);
return;
}
retry:
event_again(&cte->ev, s, EV_TIMEOUT|retry_flag, ssl_read,
&cte->tv_start, &cte->table->conf.timeout, cte);
return;
}
struct ibuf *
ikev2_msg_encrypt(struct iked *env, struct iked_sa *sa, struct ibuf *src)
{
size_t len, encrlen, integrlen, blocklen, outlen;
uint8_t *buf, pad = 0, *ptr;
struct ibuf *encr, *dst = NULL, *out = NULL;
buf = ibuf_data(src);
len = ibuf_size(src);
log_debug("%s: decrypted length %zu", __func__, len);
print_hex(buf, 0, len);
if (sa == NULL ||
sa->sa_encr == NULL ||
sa->sa_integr == NULL) {
log_debug("%s: invalid SA", __func__);
goto done;
}
if (sa->sa_hdr.sh_initiator)
encr = sa->sa_key_iencr;
else
encr = sa->sa_key_rencr;
blocklen = cipher_length(sa->sa_encr);
integrlen = hash_length(sa->sa_integr);
encrlen = roundup(len + sizeof(pad), blocklen);
pad = encrlen - (len + sizeof(pad));
/*
* Pad the payload and encrypt it
*/
if (pad) {
if ((ptr = ibuf_advance(src, pad)) == NULL)
goto done;
arc4random_buf(ptr, pad);
}
if (ibuf_add(src, &pad, sizeof(pad)) != 0)
goto done;
log_debug("%s: padded length %zu", __func__, ibuf_size(src));
print_hex(ibuf_data(src), 0, ibuf_size(src));
cipher_setkey(sa->sa_encr, encr->buf, ibuf_length(encr));
cipher_setiv(sa->sa_encr, NULL, 0);
cipher_init_encrypt(sa->sa_encr);
if ((dst = ibuf_dup(sa->sa_encr->encr_iv)) == NULL)
goto done;
if ((out = ibuf_new(NULL,
cipher_outlength(sa->sa_encr, encrlen))) == NULL)
goto done;
outlen = ibuf_size(out);
cipher_update(sa->sa_encr,
ibuf_data(src), encrlen, ibuf_data(out), &outlen);
if (outlen && ibuf_add(dst, ibuf_data(out), outlen) != 0)
goto done;
if ((ptr = ibuf_advance(dst, integrlen)) == NULL)
goto done;
explicit_bzero(ptr, integrlen);
log_debug("%s: length %zu, padding %d, output length %zu",
__func__, len + sizeof(pad), pad, ibuf_size(dst));
print_hex(ibuf_data(dst), 0, ibuf_size(dst));
ibuf_release(src);
ibuf_release(out);
return (dst);
done:
ibuf_release(src);
ibuf_release(out);
ibuf_release(dst);
return (NULL);
}
static int highlight_node ( struct list_node *node ) {
struct tokenizer *t = tokenizer_init ();
int ret;
struct ibuf *ibuf = ibuf_init ();
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
/* Initialize */
node->buf.length = 0;
node->buf.tlines = NULL;
node->buf.max_width = 0;
if ( tokenizer_set_file ( t, node->path, node->language ) == -1 ) {
if_print_message ("%s:%d tokenizer_set_file error", __FILE__, __LINE__);
return -1;
}
while ( ( ret = tokenizer_get_token ( t ) ) > 0 ) {
enum tokenizer_type e = tokenizer_get_packet_type ( t );
/*if_print_message ( "TOKEN(%d:%s)\n", e, tokenizer_get_printable_enum ( e ) );*/
switch ( e ) {
case TOKENIZER_KEYWORD:
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_KEYWORD );
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_TYPE:
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TYPE );
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_LITERAL:
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_LITERAL );
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_NUMBER:
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
break;
case TOKENIZER_COMMENT:
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_COMMENT );
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_DIRECTIVE:
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_DIRECTIVE );
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_TEXT:
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
break;
case TOKENIZER_NEWLINE:
node->buf.length++;
node->buf.tlines = realloc ( node->buf.tlines, sizeof ( char *) * node->buf.length );
node->buf.tlines[node->buf.length-1] = strdup ( ibuf_get ( ibuf ) );
if ( ibuf_length ( ibuf ) > node->buf.max_width )
node->buf.max_width = ibuf_length ( ibuf );
ibuf_clear ( ibuf );
ibuf_addchar ( ibuf, HL_CHAR );
ibuf_addchar ( ibuf, HLG_TEXT );
break;
case TOKENIZER_ERROR:
ibuf_add ( ibuf, tokenizer_get_data ( t ) );
break;
default:
return -1;
break;
}
}
return 0;
}
int
ca_reload(struct iked *env)
{
struct ca_store *store = env->sc_priv;
uint8_t md[EVP_MAX_MD_SIZE];
char file[PATH_MAX];
struct iovec iov[2];
struct dirent *entry;
STACK_OF(X509_OBJECT) *h;
X509_OBJECT *xo;
X509 *x509;
DIR *dir;
int i, len, iovcnt = 0;
/*
* Load CAs
*/
if ((dir = opendir(IKED_CA_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CA_DIR, entry->d_name) == -1)
continue;
if (!X509_load_cert_file(store->ca_calookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load ca file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
log_debug("%s: loaded ca file %s", __func__, entry->d_name);
}
closedir(dir);
/*
* Load CRLs for the CAs
*/
if ((dir = opendir(IKED_CRL_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CRL_DIR, entry->d_name) == -1)
continue;
if (!X509_load_crl_file(store->ca_calookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load crl file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
/* Only enable CRL checks if we actually loaded a CRL */
X509_STORE_set_flags(store->ca_cas, X509_V_FLAG_CRL_CHECK);
log_debug("%s: loaded crl file %s", __func__, entry->d_name);
}
closedir(dir);
/*
* Save CAs signatures for the IKEv2 CERTREQ
*/
ibuf_release(env->sc_certreq);
if ((env->sc_certreq = ibuf_new(NULL, 0)) == NULL)
return (-1);
h = store->ca_cas->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
x509 = xo->data.x509;
len = sizeof(md);
ca_subjectpubkey_digest(x509, md, &len);
log_debug("%s: %s", __func__, x509->name);
if (ibuf_add(env->sc_certreq, md, len) != 0) {
ibuf_release(env->sc_certreq);
return (-1);
}
}
if (ibuf_length(env->sc_certreq)) {
env->sc_certreqtype = IKEV2_CERT_X509_CERT;
iov[0].iov_base = &env->sc_certreqtype;
iov[0].iov_len = sizeof(env->sc_certreqtype);
iovcnt++;
iov[1].iov_base = ibuf_data(env->sc_certreq);
iov[1].iov_len = ibuf_length(env->sc_certreq);
iovcnt++;
log_debug("%s: loaded %zu ca certificate%s", __func__,
ibuf_length(env->sc_certreq) / SHA_DIGEST_LENGTH,
ibuf_length(env->sc_certreq) == SHA_DIGEST_LENGTH ?
"" : "s");
(void)proc_composev(&env->sc_ps, PROC_IKEV2, IMSG_CERTREQ,
iov, iovcnt);
}
/*
* Load certificates
*/
if ((dir = opendir(IKED_CERT_DIR)) == NULL)
return (-1);
while ((entry = readdir(dir)) != NULL) {
if ((entry->d_type != DT_REG) &&
(entry->d_type != DT_LNK))
continue;
if (snprintf(file, sizeof(file), "%s%s",
IKED_CERT_DIR, entry->d_name) == -1)
continue;
if (!X509_load_cert_file(store->ca_certlookup, file,
X509_FILETYPE_PEM)) {
log_warn("%s: failed to load cert file %s", __func__,
entry->d_name);
ca_sslerror(__func__);
continue;
}
log_debug("%s: loaded cert file %s", __func__, entry->d_name);
}
closedir(dir);
h = store->ca_certs->objs;
for (i = 0; i < sk_X509_OBJECT_num(h); i++) {
xo = sk_X509_OBJECT_value(h, i);
if (xo->type != X509_LU_X509)
continue;
x509 = xo->data.x509;
(void)ca_validate_cert(env, NULL, x509, 0);
}
if (!env->sc_certreqtype)
env->sc_certreqtype = store->ca_pubkey.id_type;
log_debug("%s: local cert type %s", __func__,
print_map(env->sc_certreqtype, ikev2_cert_map));
iov[0].iov_base = &env->sc_certreqtype;
iov[0].iov_len = sizeof(env->sc_certreqtype);
if (iovcnt == 0)
iovcnt++;
(void)proc_composev(&env->sc_ps, PROC_IKEV2, IMSG_CERTREQ, iov, iovcnt);
return (0);
}
int
eap_mschap(struct iked *env, struct iked_sa *sa, struct eap_message *eap)
{
struct iked_user *usr;
struct eap_message *resp;
struct eap_mschap_response *msr;
struct eap_mschap_peer *msp;
struct eap_mschap *ms;
struct eap_mschap_success *mss;
u_int8_t *ptr, *pass;
size_t len, passlen;
char *name, *msg;
u_int8_t ntresponse[EAP_MSCHAP_NTRESPONSE_SZ];
u_int8_t successmsg[EAP_MSCHAP_SUCCESS_SZ];
struct ibuf *eapmsg = NULL;
int ret = -1;
if (!sa_stateok(sa, IKEV2_STATE_EAP)) {
log_debug("%s: unexpected EAP", __func__);
return (0); /* ignore */
}
if (sa->sa_hdr.sh_initiator) {
log_debug("%s: initiator EAP not supported", __func__);
return (-1);
}
/* Only MSCHAP-V2 */
if (eap->eap_type != EAP_TYPE_MSCHAP_V2) {
log_debug("%s: unsupported type EAP-%s", __func__,
print_map(eap->eap_type, eap_type_map));
return (-1);
}
if (betoh16(eap->eap_length) < (sizeof(*eap) + sizeof(*ms))) {
log_debug("%s: short message", __func__);
return (-1);
}
ms = (struct eap_mschap *)(eap + 1);
ptr = (u_int8_t *)(eap + 1);
switch (ms->ms_opcode) {
case EAP_MSOPCODE_RESPONSE:
msr = (struct eap_mschap_response *)ms;
if (betoh16(eap->eap_length) < (sizeof(*eap) + sizeof(*msr))) {
log_debug("%s: short response", __func__);
return (-1);
}
ptr += sizeof(*msr);
len = betoh16(eap->eap_length) -
sizeof(*eap) - sizeof(*msr);
if (len == 0 && sa->sa_eapid != NULL)
name = strdup(sa->sa_eapid);
else
name = get_string(ptr, len);
if (name == NULL) {
log_debug("%s: invalid response name", __func__);
return (-1);
}
if ((usr = user_lookup(env, name)) == NULL) {
log_debug("%s: unknown user '%s'", __func__, name);
free(name);
return (-1);
}
free(name);
if ((pass = string2unicode(usr->usr_pass, &passlen)) == NULL)
return (-1);
msp = &msr->msr_response.resp_peer;
mschap_nt_response(ibuf_data(sa->sa_eap.id_buf),
msp->msp_challenge, usr->usr_name, strlen(usr->usr_name),
pass, passlen, ntresponse);
if (memcmp(ntresponse, msp->msp_ntresponse,
sizeof(ntresponse)) != 0) {
log_debug("%s: '%s' authentication failed", __func__,
usr->usr_name);
free(pass);
/* XXX should we send an EAP failure packet? */
return (-1);
}
bzero(&successmsg, sizeof(successmsg));
mschap_auth_response(pass, passlen,
ntresponse, ibuf_data(sa->sa_eap.id_buf),
msp->msp_challenge, usr->usr_name, strlen(usr->usr_name),
successmsg);
if ((sa->sa_eapmsk = ibuf_new(NULL, MSCHAP_MSK_SZ)) == NULL) {
log_debug("%s: failed to get MSK", __func__);
free(pass);
return (-1);
}
mschap_msk(pass, passlen, ntresponse,
ibuf_data(sa->sa_eapmsk));
free(pass);
log_info("%s: '%s' authenticated", __func__, usr->usr_name);
if ((eapmsg = ibuf_static()) == NULL)
return (-1);
msg = " M=Welcome";
if ((resp = ibuf_advance(eapmsg, sizeof(*resp))) == NULL)
goto done;
resp->eap_code = EAP_CODE_REQUEST;
resp->eap_id = eap->eap_id + 1;
resp->eap_length = htobe16(sizeof(*resp) + sizeof(*mss) +
sizeof(successmsg) + strlen(msg));
resp->eap_type = EAP_TYPE_MSCHAP_V2;
if ((mss = ibuf_advance(eapmsg, sizeof(*mss))) == NULL)
goto done;
mss->mss_opcode = EAP_MSOPCODE_SUCCESS;
mss->mss_id = msr->msr_id;
mss->mss_length = htobe16(sizeof(*mss) +
sizeof(successmsg) + strlen(msg));
if (ibuf_add(eapmsg, successmsg, sizeof(successmsg)) != 0)
goto done;
if (ibuf_add(eapmsg, msg, strlen(msg)) != 0)
goto done;
break;
case EAP_MSOPCODE_SUCCESS:
if ((eapmsg = ibuf_static()) == NULL)
return (-1);
if ((resp = ibuf_advance(eapmsg, sizeof(*resp))) == NULL)
goto done;
resp->eap_code = EAP_CODE_RESPONSE;
resp->eap_id = eap->eap_id;
resp->eap_length = htobe16(sizeof(*resp) + sizeof(*ms));
resp->eap_type = EAP_TYPE_MSCHAP_V2;
if ((ms = ibuf_advance(eapmsg, sizeof(*ms))) == NULL)
goto done;
ms->ms_opcode = EAP_MSOPCODE_SUCCESS;
break;
case EAP_MSOPCODE_FAILURE:
case EAP_MSOPCODE_CHANGE_PASSWORD:
case EAP_MSOPCODE_CHALLENGE:
default:
log_debug("%s: EAP-%s unsupported "
"responder operation %s", __func__,
print_map(eap->eap_type, eap_type_map),
print_map(ms->ms_opcode, eap_msopcode_map));
return (-1);
}
if (eapmsg != NULL)
ret = ikev2_send_ike_e(env, sa, eapmsg,
IKEV2_PAYLOAD_EAP, IKEV2_EXCHANGE_IKE_AUTH, 1);
if (ret == 0)
sa_state(env, sa, IKEV2_STATE_AUTH_SUCCESS);
done:
ibuf_release(eapmsg);
return (ret);
}
int
ikev2_pld_delete(struct iked *env, struct ikev2_payload *pld,
struct iked_message *msg, off_t offset)
{
struct iked_childsa **peersas = NULL;
struct iked_sa *sa = msg->msg_sa;
struct ikev2_delete *del, *localdel;
struct ibuf *resp = NULL;
u_int64_t *localspi = NULL;
u_int64_t spi64, spi = 0;
u_int32_t spi32;
u_int8_t *buf, *msgbuf = ibuf_data(msg->msg_data);
size_t found = 0, failed = 0;
int cnt, i, len, sz, ret = -1;
/* Skip if it's a reply and we don't have to deal with it */
if (ikev2_msg_frompeer(msg) && sa &&
(sa->sa_stateflags & IKED_REQ_INF)) {
sa->sa_stateflags &= ~IKED_REQ_INF;
if ((sa->sa_stateflags & IKED_REQ_DELETE) == 0)
return (0);
}
if ((del = ibuf_seek(msg->msg_data, offset, sizeof(*del))) == NULL)
return (-1);
cnt = betoh16(del->del_nspi);
sz = del->del_spisize;
log_debug("%s: proto %s spisize %d nspi %d",
__func__, print_map(del->del_protoid, ikev2_saproto_map),
sz, cnt);
buf = msgbuf + offset + sizeof(*del);
len = betoh16(pld->pld_length) - sizeof(*pld) - sizeof(*del);
print_hex(buf, 0, len);
switch (sz) {
case 4:
case 8:
break;
default:
if (ikev2_msg_frompeer(msg) &&
del->del_protoid == IKEV2_SAPROTO_IKE) {
/* Send an empty informational response */
if ((resp = ibuf_static()) == NULL)
goto done;
ret = ikev2_send_ike_e(env, sa, resp,
IKEV2_PAYLOAD_NONE,
IKEV2_EXCHANGE_INFORMATIONAL, 1);
ibuf_release(resp);
sa_state(env, sa, IKEV2_STATE_CLOSED);
return (ret);
}
log_debug("%s: invalid SPI size", __func__);
return (-1);
}
if ((len / sz) != cnt) {
log_debug("%s: invalid payload length %d/%d != %d",
__func__, len, sz, cnt);
return (-1);
}
if (ikev2_msg_frompeer(msg) &&
((peersas = calloc(cnt, sizeof(struct iked_childsa *))) == NULL ||
(localspi = calloc(cnt, sizeof(u_int64_t))) == NULL)) {
log_warn("%s", __func__);
goto done;
}
for (i = 0; i < cnt; i++) {
switch (sz) {
case 4:
memcpy(&spi32, buf + (i * sz), sizeof(spi32));
spi = betoh32(spi32);
break;
case 8:
memcpy(&spi64, buf + (i * sz), sizeof(spi64));
spi = betoh64(spi64);
break;
}
log_debug("%s: spi %s", __func__, print_spi(spi, sz));
if (peersas == NULL || sa == NULL)
continue;
if ((peersas[i] = childsa_lookup(sa, spi,
del->del_protoid)) == NULL) {
log_warnx("%s: CHILD SA doesn't exist for spi %s",
__func__, print_spi(spi, del->del_spisize));
goto done;
}
if (ikev2_childsa_delete(env, sa, del->del_protoid, spi,
&localspi[i], 0) == -1)
failed++;
else
found++;
/*
* Flows are left in the require mode so that it would be
* possible to quickly negotiate a new Child SA
*/
}
/* Parsed outgoing message? */
if (!ikev2_msg_frompeer(msg))
goto done;
if (sa && (sa->sa_stateflags & IKED_REQ_DELETE)) {
/* Finish rekeying */
sa->sa_stateflags &= ~IKED_REQ_DELETE;
ret = 0;
goto done;
}
/* Response to the INFORMATIONAL with Delete payload */
if ((resp = ibuf_static()) == NULL)
goto done;
if (found) {
if ((localdel = ibuf_advance(resp, sizeof(*localdel))) == NULL)
goto done;
localdel->del_protoid = del->del_protoid;
localdel->del_spisize = del->del_spisize;
localdel->del_nspi = htobe16(found);
for (i = 0; i < cnt; i++) {
switch (sz) {
case 4:
spi32 = htobe32(localspi[i]);
if (ibuf_add(resp, &spi32, sizeof(spi32)) != 0)
goto done;
break;
case 8:
spi64 = htobe64(localspi[i]);
if (ibuf_add(resp, &spi64, sizeof(spi64)) != 0)
goto done;
break;
}
}
log_warnx("%s: deleted %d spis", __func__, found);
}
if (found) {
ret = ikev2_send_ike_e(env, sa, resp, IKEV2_PAYLOAD_DELETE,
IKEV2_EXCHANGE_INFORMATIONAL, 1);
} else {
/* XXX should we send an INVALID_SPI notification? */
ret = 0;
}
done:
if (localspi)
free(localspi);
if (peersas)
free(peersas);
ibuf_release(resp);
return (ret);
}
/* Please forgive me for adding all the comment below. This function
* has some strange bahaviors that I thought should be well explained.
*/
void rlctx_send_user_command(char *line)
{
char *cline;
int length;
char *rline_prompt;
tgdb_request_ptr request_ptr;
if (line == NULL) {
/* NULL line means rl_callback_read_char received EOF */
ibuf_add(current_line, "quit");
} else {
/* Add the line passed in to the current line */
ibuf_add(current_line, line);
}
/* Get current line, and current line length */
cline = ibuf_get(current_line);
length = ibuf_length(current_line);
/* Check to see if the user is escaping the line, to use a
* multi line command. If so, return so that the user can
* continue the command. This data should not go into the history
* buffer, or be sent to gdb yet.
*
* Also, notice the length > 0 condition. (length == 0) can happen
* when the user simply hits Enter on the keyboard. */
if (length > 0 && cline[length - 1] == '\\') {
/* The \ char is for continuation only, it is not meant to be sent
* to GDB as a character. */
ibuf_delchar(current_line);
/* Only need to change the prompt the first time the \ char is used.
* Doing it a second time would erase the real rline_last_prompt,
* since the prompt has already been set to "".
*/
if (!rline_last_prompt) {
rline_get_prompt(rline, &rline_prompt);
rline_last_prompt = strdup(rline_prompt);
/* GDB set's the prompt to nothing when doing continuation.
* This is here just for compatibility. */
rline_set_prompt(rline, "");
}
return;
}
/* If here, a full command has been sent. Restore the prompt. */
if (rline_last_prompt) {
rline_set_prompt(rline, rline_last_prompt);
free(rline_last_prompt);
rline_last_prompt = NULL;
}
/* Don't add the enter command to the history */
if (length > 0)
rline_add_history(rline, cline);
request_ptr = tgdb_request_run_console_command(tgdb, cline);
if (!request_ptr)
logger_write_pos(logger, __FILE__, __LINE__,
"rlctx_send_user_command\n");
/* Send this command to TGDB */
handle_request(tgdb, request_ptr);
ibuf_clear(current_line);
}
